Extracting drainage network from high resolution DEM in Toowoomba, Queensland
Paper
Paper/Presentation Title | Extracting drainage network from high resolution DEM in Toowoomba, Queensland |
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Presentation Type | Paper |
Authors | Liu, Xiaoye (Author) and Zhang, Zhenyu (Author) |
Journal or Proceedings Title | Proceedings of the 2010 Queensland Surveying and Spatial Conference (QSSC2010) |
Number of Pages | 12 |
Year | 2010 |
Place of Publication | Brisbane, Australia |
Web Address (URL) of Paper | http://www.spatialsciences.org/images/QLD/QSSC/Program/xiaoye_liu_qssc_paper_revised.pdf |
Conference/Event | Queensland Surveying and Spatial Conference 2010 (QSSC 2010) |
Event Details | Queensland Surveying and Spatial Conference 2010 (QSSC 2010) Event Date 01 to end of 03 Sep 2010 Event Location Brisbane, Australia |
Abstract | Detailed delineation of drainage networks is the first step for many natural resource management studies. Compared with field survey and interpretation from aerial photographs or topographic maps, automation of drainage network extraction from DEMs is an efficient way and has received considerable attention. Toowoomba City is the principal activity centre for the Darling Downs, Queensland. The development of the Surat Energy and Resource Province will continue to drive population growth in Toowoomba, placing high pressure on water and other resources in the region. This study aims to extract drainage networks from a high resolution DEM to support the strategy for improving the management of the impacts of stormwater, flooding, bank stability,pollutants, water quality and creek health in Toowoomba City. Composition parameters of the drainage network including the numbers of streams and the stream lengths are derived from the high resolution DEM. Contributing area thresholds and their impacts on the extraction of drainage networks are also discussed. |
Keywords | digital elevation model; drainage network; stream order; Toowoomba; Condamine catchment; Murray Darling Basin |
ANZSRC Field of Research 2020 | 400508. Infrastructure engineering and asset management |
410406. Natural resource management | |
401304. Photogrammetry and remote sensing | |
Public Notes | No evidence of copyright restrictions preventing deposit. |
Byline Affiliations | Department of Surveying and Land Information |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q0779/extracting-drainage-network-from-high-resolution-dem-in-toowoomba-queensland
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